I am doing one project in which msg from GSM is read and it is
Displayed to LCD.
but microcontroller 89v51 and GSM900A does not communicate every
sometimes it successfully happen that AT command from microcontroller
is send to GSM and message from any no. to GSM is Displayed to
bt it's not happening everytime..
i am not getting the solution, Please help..
I have connect 12V,2A supply to GSM..
Microcontroller Rx pin connected to Tx of GSM..
Microcontroller Tx pin Connected to Rx of GSM..
and Ground to Ground..
Please help me.
what may be the problem?
and how should i fix that.
Is the Proteus approach working well for your
You'd use a Microsoft or GNU C compiler, the serial port access
could be abstracted via a couple of subroutines so ostensibly the
same core code could be run on the PC or 8051.
Get the automation and interaction figured out without the circus
of a black box you have minimal internal visibility into.
Note that the uVision simulator can direct its simulated UART
output to a COM port, and can receive input from a COM port into the